TestDFSClientSocketSize has two tests that assert that a value that was set via java.net.Socket#setSendBufferSize is equal to the value subsequently returned by java.net.Socket#getSendBufferSize.
These tests are flaky when we run them. The occasionally fail.
This is expected behavior, actually, because Socket#setSendBufferSize()is only a hint. (Similar to how the underlying libc setsockopt(SO_SNDBUF) works).